CME Time is Correct but SIP Endpoints are on Different Timezone

If your Communications Manager Express (CME) clock and timezone configuration in telephony-service and voice register global are correct but SIP endpoints are a few hours behind or ahead (on a different timezone), you will need the timezone updater.

https://www.oracle.com/java/technologies/javase-tzupdater-downloads.html

1. Upload from TFTP to Flash.
2. Add the TFTP server configuration tftp-server flash:phones/tzupdater.jar alias tzupdater.jar
3. Update SIP Configuration and reset endpoints

voice register global
 no create profile
 create profile
 reset

Filed under: Cisco, Unified Communications